Kubernetes存储类（StorageClass）部署指南

概述

StorageClass 为管理员提供了描述存储“类”的方法。不同类型的存储类可能会映射到不同的服务质量等级或备份策略，或者由集群管理员制定的任意策略。每个 StorageClass 包含 provisioner、parameters 和 reclaimPolicy 字段，这些字段会在动态分配 PersistentVolume 时使用到。

StorageClass 命名

StorageClass 对象的命名很重要，用户使用这个命名来请求生成一个特定的类。当创建 StorageClass 对象时，管理员设置 StorageClass 对象的命名和其他参数，一旦创建后不能再对其进行更新。

以 NFS 服务为例

安装 NFS 服务

# 安装 NFS 服务并启动yum -y install nfs-common nfs-utilssystemctl start nfs && systemctl enable nfssystemctl start rpcbind && systemctl enable rpcbind

创建共享目录

mkdir -p /data/nfsprovisionerchmod 777 /data/nfsprovisionerchown nfsnobody /data/nfsprovisioner

修改 exports 文件

cat > /etc/exports << EOF# 将共享目录添加到 exports 文件中/data/nfsprovisioner *(rw,async)EOF

部署 NFS 客户端 provisioner

修改配置参数

# 修改对应的 NFS 地址和目录

部署 YAML 文件

apiVersion: storage.k8s.io/v1kind: StorageClassmetadata:  name: managed-nfs-storageprovisioner: fuseim.pri/ifs  # 或其他名称，需与部署的环境相关联parameters:  archiveOnDelete: "false"# 例：服务账号配置apiVersion: v1kind: ServiceAccountmetadata:  name: nfs-client-provisioner  namespace: default# 例：角色配置apiVersion: rbac.authorization.k8s.io/v1kind: ClusterRolemetadata:  name: nfs-client-provisioner-runnerrules:  - apiGroups: [""]    resources: ["persistentvolumes"]    verbs: ["get", "list", "watch", "create", "delete"]  - apiGroups: [""]    resources: ["persistentvolumeclaims"]    verbs: ["get", "list", "watch", "update"]  - apiGroups: ["storage.k8s.io"]    resources: ["storageclasses"]    verbs: ["get", "list", "watch"]  - apiGroups: [""]    resources: ["events"]    verbs: ["create", "update", "patch"]# 例：角色绑定apiVersion: rbac.authorization.k8s.io/v1kind: ClusterRoleBindingmetadata:  name: run-nfs-client-provisionersubjects:  - kind: ServiceAccount    name: nfs-client-provisioner    namespace: defaultroleRef:  kind: ClusterRole  name: nfs-client-provisioner-runner  apiGroup: rbac.authorization.k8s.io# 例：角色配置apiVersion: rbac.authorization.k8s.io/v1kind: Rolemetadata:  name: leader-locking-nfs-client-provisioner  namespace: defaultrules:  - apiGroups: [""]    resources: ["endpoints"]    verbs: ["get", "list", "watch", "create", "update", "patch"]# 例：角色绑定apiVersion: rbac.authorization.k8s.io/v1kind: RoleBindingmetadata:  name: leader-locking-nfs-client-provisioner  namespace: defaultsubjects:  - kind: ServiceAccount    name: nfs-client-provisioner    namespace: defaultroleRef:  kind: Role  name: leader-locking-nfs-client-provisioner  apiGroup: rbac.authorization.k8s.io# 例：部署配置apiVersion: apps/v1kind: Deploymentmetadata:  name: nfs-client-provisioner  labels:    app: nfs-client-provisioner  namespace: defaultspec:  replicas: 1  strategy:    type: Recreate  selector:    matchLabels:      app: nfs-client-provisioner  template:    metadata:      labels:        app: nfs-client-provisioner    spec:      serviceAccountName: nfs-client-provisioner      containers:        - name: nfs-client-provisioner          image: registry.cn-shanghai.aliyuncs.com/leozhanggg/storage/nfs-client-provisioner:latest          volumeMounts:            - name: nfs-client-root              mountPath: /persistentvolumes          env:            - name: PROVISIONER_NAME              value: fuseim.pri/ifs            - name: NFS_SERVER              value: 服务器IP地址            - name: NFS_PATH              value: /data/nfsprovisioner      volumes:        - name: nfs-client-root          nfs:            server: 服务器IP地址            path: /data/nfsprovisioner

测试部署

创建 PersistentVolumeClaim

apiVersion: v1kind: PersistentVolumeClaimmetadata:  name: test-claimannotations:  volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"spec:  accessModes:    - ReadWriteMany  resources:    requests:      storage: 1Mi

创建测试 Pod

apiVersion: v1kind: Podmetadata:  name: test-podspec:  containers:  - name: test-pod    image: busybox    command:      - "/bin/sh"    args:      - "-c"      - "touch /mnt/SUCCESS && exit 0 || exit 1"    volumeMounts:    - name: nfs-pvc      mountPath: "/mnt"  restartPolicy: "Never"  volumes:    - name: nfs-pvc      persistentVolumeClaim:        claimName: test-claim

命令示例

# 部署配置kubectl apply -f nfs-client-provisioner.yaml# 检查 Pod 状态kubectl get pod | grep nfs-client-provisioner

资源清理

# 删除测试 Podkubectl delete -f /root/test-pod.yaml# 删除 PersistentVolumeClaimkubectl delete persistentvolumeclaim "test-claim"

注意事项

请根据实际环境调整 NFS 服务器地址和共享目录路径。部署完成后，可以通过 kubectl get pod 检查 NFS 客户端 Provisioner 的运行状态。

转载地址：http://zknyz.baihongyu.com/

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